import copy
dictionary = {'卷心菜':'caddage','午餐': ['lunch','nooning']}
dictionary1 = dictionary
dictionary2 = dictionary.copy()
dictionary3 = copy.deepcopy(dictionary)
dictionary['卷心菜'] = 'pamphrey'
dictionary['午餐'].remove('nooning')
print('dictionary = ', dictionary)
print('dictionary1 = ', dictionary1)
print('dictionary2 = ', dictionary2)
print('dictionary3 = ', dictionary3)
dictionary = {
    '卷心菜':'cabbage',
    '午餐':'lunch',
    '机器人':'robot',
    '天空':'sky',
    '花':'flower',
}
print('中英文字典中所有中文词组及其对应的英文单词:')
for item in dictionary.items():
    print(item)
print('中英文字典中所有中文词组:')
for chinese in dictionary.keys():
    print (chinese, end=' ')
print('\n中英文字典中所有英文单词:')
for english  in dictionary.values():
    print(chinese, end=' ')
